* {
    margin: 0;
    padding: 0;
}
ul {
    list-style: none;
}
$span-color:rgb(195,195,195);
@mixin hpt-center {
    height: 75px;
    padding-top: 60px;
    text-align: center;
}
.float-left {
    float: left;
}
$width-sum:1350px;
.index {
    width: $width-sum;
    height: 1915px;
    margin: 0 auto;
    background-color: #cecece;
    .nav {
        width: 100%;
        height: 80px;
        background-color: #fff;
        img {
            @extend .float-left;
            margin-left: 135px;
            padding: 18px 0;
        }
        .list {
            float: right;
            width: 800px;
            height: 100%;
            line-height: 80px;
            text-align: center;
            ul {
                li {
                    @extend .float-left;
                    margin-left: 50px;
                    color: rgb(100,100,100);
                }
            }
        }
    }
    .image {
        img {
            width: 100%;
            height: 470px;
        }
    }
    .center_up {
        width: 100%;
        height: 405px;
        background-color: #fff;
        div {
            width: 1040px;
            height: 100%;
            margin: 0 auto;
            .center_up_nav {
                @include hpt-center;
                p {
                    font-size: 14px;
                    span {
                        color: $span-color;
                        font-size: 12px;
                    }
                }
            }
            .center_up_banner {
                height: 270px;
                ul {
                    li {
                        @extend .float-left;
                        margin-left: 30px;
                        margin-right: 30px;
                    }
                }
            }
        }
    }
    .center_down {
        width: 100%;
        height: 460px;
        background-color: rgb(248,248,248);
        div {
            width: 1080px;
            height: 100%;
            margin: 0 auto;
            .center_down_nav {
                @include hpt-center;
                p {
                    span {
                        color: $span-color;
                        font-size: 12px;
                        em {
                            color: rgb(102,196,180);
                            font-size: 16px;
                            font-style: normal;
                        }
                    }
                }
            }
            .center_down_banner {
                height: 250px;
                ul {
                    li {
                        @extend .float-left;
                        margin-left: 10px;
                        margin-right: 10px;
                    }
                }
            }
            .center_down_floor {
                width: 100%;
                height: 35px;
                input {
                    width: 170px;
                    height: 35px;
                    display: block;
                    margin: 0 auto;
                    color: #fff;
                    border-radius: 23px;
                    border-color: transparent;
                    background-color: rgb(103,197,181);
                }
            }
        }
    }
    .floor {
        width: 100%;
        height: 450px;
        background-color: #fff;
        div {
            .floor_nav {
                @include hpt-center;
                p {
                    font-size: 14px;
                    span {
                        color: $span-color;
                        font-size: 12px;
                    }
                }
            }
            .floor_banner {
                height: calc(100%-135px);
                margin-top: 40px;
                div {
                    @extend .float-left;
                    margin-left: 135px;
                }
                .floor_banner_right {
                    margin-left: 15px;
                }
            }
        }
    }
    .statement {
        font-size: 12px;
        color: #fff;
        width: 100%;
        height: 50px;
        background-color: rgb(103,197,181);
        p {
            @extend .float-left;
            height: 50px;
            line-height: 50px;
            text-align: center;
            margin-left: 135px;
        }
        div {
            float: right;
            ul {
                margin-right: 135px;
                margin-top: 17px;
                li {
                    @extend .float-left;
                    padding: 0 15px;
                    border-left: 1px solid rgb(193,233,225);
                    border-right: 1px solid rgb(144,211,201);
                }
            }
        }
    }
}

.malou li:nth-of-type(1) {
    border-left: transparent;
}
.malou li:nth-of-type(4) {
    border-right: transparent;
}